diff options
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index bfa7452ca92e..294b9184dfe1 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3829,8 +3829,12 @@ static inline bool ttwu_queue_cond(int cpu, int wake_flags) * CPU then use the wakelist to offload the task activation to * the soon-to-be-idle CPU as the current CPU is likely busy. * nr_running is checked to avoid unnecessary task stacking. + * + * Note that we can only get here with (wakee) p->on_rq=0, + * p->on_cpu can be whatever, we've done the dequeue, so + * the wakee has been accounted out of ->nr_running. */ - if ((wake_flags & WF_ON_CPU) && cpu_rq(cpu)->nr_running <= 1) + if ((wake_flags & WF_ON_CPU) && !cpu_rq(cpu)->nr_running) return true; return false; |